How to calculate the hydraulic system

How to calculate the hydraulic system

HYDRAULIC PUMP AND CYLINDER SELECTION

When designing a hydraulic system, firstly the dimensions of the movement elements (cylinder or hydraulic motor) are determined and then the size of the power unit (pump, motor, valve, hydraulic tank, etc.) that will provide the prescribed pressure and speed is determined.

The Hydraulic System Calculation is made with the following formulas.

Piston Section Area:

A1 = π x D² / 4

Piston Rod Section Area:

A2 = π x (D²-d²) / 4

Stroke Speed:

V = h / t

Force:

F = p x A

Required Flow:

Q = A x V x 3/50

Driving Force:

P = p x Q / (600 x ų)

Hydraulic System Account Definitions

F = Force (daN)

p = Working Pressure (Bar)

A = Effective Area (cm²)

D = Piston Diameter (cm)

d = Piston Rod Diameter (cm)

V = Piston Speed ​​(cm / sec)

h = Stroke (cm)

t = Stroke Time (sec)

Q = Verdi (Flow) (lt / min)

P = Drive Power (kW)

ų. = Yield (0.8 …… ..0.85)